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arm-autonomy/xen-devicetree: check if kernel Image size is correct

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This patch brings following improvements:
 * Adds a check for kernel size defined by XEN_DEVICETREE_DOM0_SIZE variable,
   whether it is greater or equal to actual kernel size.
   If not, bitbake warns user and adjusts value of XEN_DEVICETREE_DOM0_SIZE.
 * Adds 'virtual/kernel:do_deploy' as a mandatory xen-devicetree dependency via
   XEN_DEVICETREE_DEPEND variable.

Issue-Id: SCM-1567
Signed-off-by: Kamil Dziezyk <kamil.dziezyk@arm.com>
Change-Id: I4f250172f1fa599b7a3673ba0887cd49372b7556
Signed-off-by: Jon Mason <jon.mason@arm.com>
This commit is contained in:
Kamil Dziezyk
2020-11-20 12:37:25 +01:00
committed by Jon Mason
parent d8dbaa20b2
commit 7c34d0affc
1 changed files with 30 additions and 1 deletions
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meta-arm-autonomy/recipes-extended/xen-devicetree/xen-devicetree.bb
+30 -1
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@@ -14,7 +14,9 @@ DESCRIPTION = "Add entries in DTB for Xen and Dom0"
# Please refer to documentation/xen-devicetree.md for documentation on those
# parameters
XEN_DEVICETREE_DEPEND ?= "virtual/kernel:do_deploy"
# kernel size is passed to xen via xen.dtb so wee need to add
# 'virtual/kernel:do_deploy' as a dependency
XEN_DEVICETREE_DEPEND_append = " virtual/kernel:do_deploy"
XEN_DEVICETREE_DTBS ?= "${KERNEL_DEVICETREE}"
XEN_DEVICETREE_XEN_BOOTARGS ?= "noreboot dom0_mem=${XEN_DEVICETREE_DOM0_MEM}"
XEN_DEVICETREE_DOM0_MEM ?= "1024M"
@@ -67,6 +69,33 @@ do_deploy() {
done
}
do_deploy[depends] += "${XEN_DEVICETREE_DEPEND}"
do_deploy[prefuncs] += "calc_xen_dtb_dom0_size"
addtask deploy after do_install
python calc_xen_dtb_dom0_size() {
from math import ceil
size = 0
if d.getVar('KERNEL_IMAGE_MAXSIZE'):
bb.note('size calculation based on KERNEL_IMAGE_MAXSIZE')
size = int(d.getVar('KERNEL_IMAGE_MAXSIZE')) * 1024
else:
kernel = os.path.realpath(d.getVar('DEPLOY_DIR_IMAGE') + '/' +\
d.getVar('KERNEL_IMAGETYPE'))
size = os.stat(kernel).st_size
bb.note('size calculation based on kernel Image file: %s' % kernel)
bb.note('size in bytes: %d' % size)
# Ceil to MiB
size_required = ceil(size / (2 ** 20)) * (2 ** 20)
size_defined = int(d.getVar('XEN_DEVICETREE_DOM0_SIZE'), 16)
if size_required > size_defined:
bb.warn ("Wrong kernel size setting inside xen dtb!\n"\
"Required:\t%(req)d (%(req)#010X)\n"\
"Requested:\t%(def)d (%(def)#010X)"\
% {"req": size_required, "def": size_defined})
bb.warn ("Overriding XEN_DEVICETREE_DOM0_SIZE with "\
"%(req)d (%(req)#010X)" % {"req": size_required})
d.setVar('XEN_DEVICETREE_DOM0_SIZE', hex(size_required))
}